12 year old Theodore "Teddy" Roosevelt Fitzroy has got a murder on his hands and trouble on his tail. Henry, the hippopatamus at the brand-new nationally known FunJungle, has gone belly up. Even though it's claimed he died of natural causes, Teddy smells something fishy and it sure ain't the polar bear's lunch. Dealing with the zoo's top brass proves to be nothing but a waste of time. They want to see any trace of Henry's death disappear like yesterday's paper. So Teddy sets out to find the truth. With the help of Summer McCraken, a fiesty girl with secrets of her own, the two narrow down their prime suspects. Is it Martin Del Gato, FunJungle's head of operations who dislikes kids and hates animals even more? Or J.J McCraken, the owner of FunJungle and Summer's father, who has more concern for the dough he's raking in than the animals in the zoo? As their investigation goes on, Teddy gets squeezed on all sides to quit asking questions—or Henry won't be the only one to turn up dead. The deeper Teddy and Summer get, the more the danger mounts—because when it comes to hippo homicide, the truth can't be kept in a cage!

Teddy Fitzroy’s back for another zoo mystery—this time it’s a koala caper—in this action-packed follow-up to Belly Up, which Kirkus Reviews called “great fun.” School troublemaker Vance Jessup thinks Teddy Fitzroy’s home at FunJungle, a state-of-the-art zoo and theme park, is the perfect place for a cruel prank. Vance bullies Teddy into his scheme, but the plan goes terribly awry. Teddy sneaks into the koala exhibit to hide out until the chaos dies down. But when the koala goes missing, Teddy is the only person caught on camera entering and exiting the exhibit. Teddy didn’t commit the crime—but if he can’t find the real culprit, he’ll be sent to juvie as a convicted koala-napper.

When someone takes aim at Rhonda Rhino, FunJungle's pregnant (and endangered) Asian greater one-horned rhinoceros, the zoo steps up security measures in order to protect this rare animal and her baby. But the extra security isn't enough;someone is still getting too close for comfort. Teddy and company start to suspect that whoever is after Rhonda is really after her horn, which is worth a lot of money on the black market. For the first time ever, the head of the zoo enlists Teddy for help; for once, he doesn't have to sneak around in order to investigate, and the results are even more wacky, and even more dangerous, than ever before.

Teddy Fitzroy returns as FunJungle’s resident sleuth when the zoo’s newest addition goes missing—before she even arrives! FunJungle is frenzied, awaiting the arrival of its most thrilling animal yet—Li Ping—a rare and very expensive giant panda that the zoo went to enormous lengths to secure. But when the truck transporting Li Ping shows up, its precious cargo has vanished into thin air. The FBI steps in to investigate, and Teddy is happy to leave the job in their (supposedly) capable hands. After all, FunJungle has never encountered a crime this serious. But when someone threatens to blackmail Teddy’s girlfriend, Summer, if he doesn’t solve the crime, his involvement in this mystery is no longer black and white.

Teddy Fitzroy returns as FunJungle's resident sleuth when a lion is falsely accused of killing a distinguished dog in the latest novel in New York Times bestselling author Stuart Gibbs' FunJungle series. For once, operations at the enormous zoo/theme park appear to be running smoothly (except for the occasional herring-related mishap in the penguin exhibit) and Teddy Fitzroy is finally able to give detective work a rest. But then a local lion is accused of killing a famous dog—and the dog's owner, an inflammatory radio host, goes on a crusade to have the cat declared a nuisance so it can be hunted. However, there's evidence that the lion might have been framed for murder and now a renegade animal activist wants teddy and his girlfriend Summer to help prove it—and catch the real killer. And if that wasn't enough, someone has poisoned FunJungle's beloved giraffes and the parks' owner wants Teddy on the case. Now, Teddy finds himself wrapped up in the middle of his most bizarre, hilarious, and dangerous case yet.

In the latest novel in New York Times bestselling author Stuart Gibbs’s FunJungle series, Teddy Fitzroy returns as FunJungle’s resident sleuth to solve his most improbable mystery yet—with a victim that’s 65 million years old. Teddy was all set for a campout at his friend Sage’s family ranch—but then Sage gets terrible news: The skull of a rare dinosaur that was being excavated on his property has mysteriously vanished overnight in the middle of a rainstorm, even though it weighed 500 pounds. Not a single footprint has been left behind. Since the dinosaur was top secret, the police don’t believe anyone outside the dig could have stolen it. A T-rex skull can sell for millions of dollars, and everyone is a suspect—including J.J. McCracken, the owner of FunJungle. Meanwhile, Teddy’s old foes, the Barksdale twins, have gotten into trouble with an illegally purchased anaconda, and Teddy’s girlfriend Summer wants to find out who’s behind the local trade in black market reptiles. The two cases will drag Teddy into more danger and chaos than ever before, in this mystery that’s stranger than fiction.

Teddy Fitzroy returns as FunJungle’s resident sleuth to solve the disappearances of endangered bison and an irreplaceable necklace. Teddy Fitzroy, his family, and some other FunJungle employees have been invited to visit a bison ranch just outside Yellowstone National Park that FunJungle’s owner, J.J. McCracken, is considering purchasing. But as usual, trouble isn’t far behind. The ranch’s endangered bison have been mysteriously disappearing. Then a massive local grizzly bear named Sasquatch breaks into the house, causing chaos. In the aftermath, Kandace McCracken discovers that her exceptionally expensive sapphire necklace has vanished. Was it stolen? Or did Sasquatch eat it? (And if so, can it be recovered?) And what’s been happening to the bison? With over a dozen suspects, it’s up to Teddy to detangle this hairy situation, before his family or friends—or any more expensive objects—become dinner.

In the eighth novel in New York Times bestselling Stuart Gibbs’s FunJungle series, Teddy Fitzroy returns as FunJungle’s resident sleuth to find the culprits behind a blown-up whale and a string of beach sand thefts. After an escaped kangaroo starts a fire that burns down his house, Teddy Fitzroy accepts an invitation to go to Malibu with his girlfriend, Summer, and her mother, Kandace. He’s hoping to spend some time relaxing on the beach, but wherever Teddy goes, trouble isn’t far behind. First, a massive dead whale has washed up on the beach—and before anyone can determine what killed it, it explodes. Doc, the head vet from FunJungle, suspects something fishy is going on and ropes Teddy and Summer into helping him investigate. Then, Teddy stumbles upon yet another mystery involving tons of stolen sand. And the paparazzi start spreading rumors about Summer dating a celebrity, leading Teddy to question their relationship. Without Summer as his trusted partner, can Teddy navigate the rough waters of this glitzy world and uncover what’s going on?

In the ninth novel in New York Times bestselling author Stuart Gibbs’s FunJungle series, resident sleuth Teddy Fitzroy is on the case to find a missing elephant and clear his friend of vandalism. When a herd of elephants interrupts the big Friday night football game, the police enlist Teddy and his father to assist them in getting the animals safely back home to the elephant sanctuary. Only when they arrive, their owners realize one of the elephants has gone missing! The lone African elephant, Tanzy, is still out there somewhere. Then Teddy’s best friend, Xavier, is accused of vandalizing a bulldozer in protest of a builder ruining a beloved piece of land they call TurtleTown. Teddy is torn. His best friend needs him but so does Tanzy. Can Teddy crack both cases before someone gets hurt?